Yuichi Sugita stuns out-of-sorts Dominic Thiem in Halle

Yuichi Sugita claimed the big scalp of Dominic Thiem at the Gerry Weber Open as Kei Nishikori also crashed out.

World No 52 Sugita broke twice to race into a 4-0 lead and promptly went on to win the opening set. The third-seeded Thiem put up a better fight in the second set, but the Japanese player still claimed an impressive 6-2, 7-5 win.

Sugita will face Denis Kudla in the quarter-final after the American beat Stefanos Tsitsipas 6-3, 6-4.

Seventh seed Nishikori was another big-name casualty as he was beaten in straight sets by #NextGen star Karen Khachanov.

The Russian produced a near faultless display as he broke twice in each set to set up a 6-2, 6-2 win.

Khachanov will take on Roberto Bautista in the last eight after the Spaniard secured a 6-4, 7-5 victory over Robin Haase from the Netherlands.

Nikoloz Basilashvili, meanwhile, set up a quarter-final clash with Borna Coric as he beat Rudolf Molleker 6-4, 7-6 (7-5).